X0206 3 2021-09-21 0 0001866692 Amplitude, Inc. AMPL 0001661321 Institutional Venture Partners XV Executive Fund, L.P. 300 SAND HILL ROAD, BUILDING 2 SUITE 250 MENLO PARK CA 94025 0 0 1 0 Class B Common Stock 0.00 Class A Common Stock 8716001 I See footnote Class B Common Stock 0.00 Class A Common Stock 46354 I See footnote The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into shares of the Issuer's Class A Common Stock on a one-to-one basis upon the earlier of (a) any transfer of the Class B Common Stock by the holder, whether or not for value, subject to certain exceptions or (b) the date that is six months following the date on which none of the Issuer's founders is an employee or director of the Issuer (unless a founder has rejoined the Issuer during such six-month period). These shares are owned directly by Institutional Venture Partners XV, L.P., of which Institutional Venture Management XV, LLC ("IVM XV") is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose. These shares are owned directly by Institutional Venture Partners XV Executive Fund, L.P., of which IVM XV is the sole general partner and exercises voting and investment power over these shares. The managing directors of IVM XV are Todd C. Chaffee, Somesh Dash, Norman A. Fogelsong, Stephen J. Harrick, Eric Liaw, Jules A. Maltz, J. Sanford Miller and Dennis B. Phelps, Jr. The reporting persons disclaim beneficial ownership of these securities, except to the extent of their respective proportionate pecuniary interest therein and this report shall not be deemed an admission that any reporting person is the beneficial owner of such securities for Section 16 or any other purpose. 2 of 2: The number of joint filers exceeds the EDGAR maximum of 10 joint filers per Form. This Form 3 is being filed in conjunction with a Form 3 being filed by Institutional Venture Management XV, LLC. Institutional Venture Partners XV Executive Fund, L.P., By /s/ Tracy Hogan, Attorney-in-Fact 2021-09-21